README.md

function-calc-no-unspaced-operator

Disallow invalid unspaced operator within math functions, such as calc() or min().

a { top: calc(1px + 2px); }
/**               ↑
 * The space around this operator */

This rule checks that there is a single whitespace or a newline plus indentation before the + or - operator, and a single whitespace or a newline after that operator.

The fix option can automatically fix all of the problems reported by this rule.

The message secondary option can accept arguments.

Options

true

The following patterns are considered problems:

a { top: calc(1px+2px); }

a { top: calc(1px+ 2px); }

a { transform: rotate(atan(-2+1)); }

The following patterns are not considered problems:

a { top: calc(1px + 2px); }

a { top: calc(calc(1em * 2) / 3); }

a { top: calc(calc(1em*2)/3); }

a {
  top: calc(var(--foo) +
    var(--bar));
}

a {
  top: calc(var(--foo)
    + var(--bar));
}